Machine for finishing the ends of turned articles



Oato 7 1924;

G. W. DUCHEMIN MACHINE} FOR FINISHING THE ENDS 0F TURNED ARTICLES Filed June 13 1922 4 Sheets $heet 1 Q Mk k mw Q INVENTOR ATTOR EY Get. 7, 1924.

G. W. DUCHEMIN MACHINE FOR FINISHING THE ENDS OF TURNED ARTICLES 1922 4 Sheets-Sheet 2 1 Filed June 13 Oct. 7 1924. 1,511,053

G.-W. DUCHEMIN MACHINE FOR FINISHING THE ENDS OF TURNED ARTICLES Filed June 13, 1922 4 sheets-sheet 5 36 IE r I g n Il Oct, 7 1924. 1,511,053

- G. w. DUCHEMIN MACHINE FOR FINISHING THE ENDS OF TURNED ARTICLES Filed June 13, 92 4 Sheets-Sheet i l I l I I l/Vl/ENTOR Patented Oct. 7, 1924.

UNIT ED STAT PATENT OFFICE.

ivmcnme' TORQTiNiSHIfiGTHE.EKbS" or ruimnn ARTICLES,

AppIioati6m'fi1ed% Iune 13f1922u Serial No. sesjoee.

J ersey,- hauls-invented. certain new and: usefull Improvement-sin: Machines fo-rihinishing the Ends of Turned Articles, of which the following-isa specification;

This invention relatesvtoa 'u achine for finishingitheends (it-turned articles, such as ,li

s s Propellers and "other a c es-W the 'ori inaLturning; -11ave ibee ui ppc edic their ends and the "maehinef y filsi holdthe' articleand als'ahold-thepatjter 34n turn-them so that thepatte fli bears against the: pattern: wheel and a; cutter; bears'fagainst the lastso: that the endsage The machine is d signed to provide" a means wherebyjthe pattern and thework in rotating r chucks are rotated on axes,- which are perpendicularto axis orrwhich the'group l ofcluicks-isrevolvedc The invention" further consistsiu certain details of construction which; will here- :"inafter more fully described and'finallyembodied in the claims.

A machine carrying.- out. my invention is chine with the cutters and pattern wheel retreated and they'chucks turned to show the ends thereof. Figure-1? is a detail top.view* of part of; th means for rotatingithej chuckj support. Figure 2 is a ,sectionion-line, 29 have their respective shafts 30 driven by in Figure 1, butwith thechucks tur'ned; to a position wherethepattern whee-1. the] cutters-bear against-the pattern-and the; lasts.

Figures '3 and e are diagrarnmatie topwiews showing gates," holding the cutters and the chucks holdingwthe lasts at the beginning and end of the cuttingioperationv Figln-e 5. is an elevation, I partlyfiin section, of the central part of the machine; whilejrthe' cutting; is going-on;- Figure-B is-a similar-flew 'illus trating how the pattern and the-'lastsfare in-.--

itially aligned-iu-theina-ch" e," F]; perspective vieiWof time" wh h wan-ihaeasin sh I si n-miss hdft Y plane indicated hythe line 1212 in Figure 10, andFigure 13is a perspective view of a ga e plate usedvon the chuck.

-hemaChine comprises a frame formed of a bed lO consisting of. legs on which the bottom} rail l-Iand; the stop rail 12 are supported. and frameslii slide in the upper edge of the bottom rail 11 and the lower edge of the top rail 12 and are'moved back and forth by handles 14,: which,as wiillbe seen from Fig ure-7,"ha{'e their shafts. 15 provided with piniorisflfl and the racks 17 on; the frames are with; the -pinions, so" that as the Ltare-turnedfthe frames are moved together or apartg'asL desired, and while I show two frames in this machine, since I prefer to, fim'sh both ends or the work at the amarium, it will be'fevident that only one can be employeld andv successively used on the mamas Qff the work.

Gates 18 are arranged' to swing in the tra'rries 13, one swinging to the rear and one swinging tdthe front, and are provided with p att errijwheelst' the one to the left in Figure 1 hating a pattern wheel 19 which is idle, an dhavingicutteris2O which are positively driVeI-tbyineans of the belts 21, shaft 22 and belt 23lwhich passes over the drum 25' on the main shaft 26 which receives its power throughthe pulley 2,7 driven by the belt 28 This is ones-form of driving mechanism for the;-cutter.' Another formis illustrated to the rightin Figure '1, in which the cutters helts' 31 o;peratedfby the motor 32 carried on one; otthe'arnisof the gates. Latches 33 act by gravity. to hold'the gates in their outward position-when the cutting operation is completed, as, will be clearly seen from it adsegposea, as will'loe' seen from g1; st-a2 ari 5- ,The e' hu ks the rqf which will i061 Y described hereinafter, l he. pafi r'n and the last at "substam I this Oerifir" and; are rotatable since the is retata-b fi, be ng'm'ounted to EQat in th bearing 36, at the top and in at the bottom, being adapted maIly-"Ssm rmQ so as to be f neelyi'rqfiitbdf Oftlh "placed" positive Such friction device, shown at the top of Figure 1, comprises a friction pulley 33 and a driving friction pulley 39 which is normally held just out of contact with it by reason of the carriage. 40 in which it is mounted being held back by the screw 41, the carriage 4O acting as a bearing forthe worm gear 42 mounted on the. same shaft as the driving friction pulley 39 and driven by a worm 43 on the shaft 44, driven by belts 45 and 46 from the jack shaft 47 which is operated by the belt 48 from the main shaft 26. Each of the chucks is provided with a gear, the top one having the gear 49, which is in mesh with the gear 50, which gear is driven from the gear 51in the extension 52 of the casing of the chuck, the gear 51 also being in mesh with the gear 53 of the bottom chuck, but the gears and 53 are not in mesh because, as will be seen fro-m Figure 2, they are off-set on different sides and thus operate in different planes, but are both in mesh with the gear 51, which provides for the direction of rotation of the chucks, as shown in Figure 9, the center one at a being the pattern, the upper one at b and the lower one at 0 being the lasts,.one of these, such as the lower one, operating in the same direction as the pattern, and the upper one at 22 operating in the opposite direction, so that a pair of lasts, thatis, right and left lasts, are made at the same time from the one pattern.

The gear 51 is driven by means of a pulley 54 mounted on the shaft 55 to which the gear 51 is secured, and a belt .56 and pulley 57 are rotated by the shaft 58 which has the gear 59 in mesh with the gear 60, which, as will be seen from Figure 5, is not connected with the chuck casing and there-' fore is independently rotatable, since the chuck casing has a stud or stud end supporting it in the bearing 37. The gear 60 and its shaft are supported by the bearing 60. The gear 60 is driven from the fric-' tion pulley 61, which has a small driving friction pulley 62 normally retreated by the screw 63 and being driven by a pulley 64 and. a belt 64 which, as will be seen from Figure 2, is operatedfrom the pulley 65 on the same shaft with the worm gear 66 operated from the worm 67 ,on'the jack shaft 47 The screws 41 and 63 are simultaneously operated, since they each have a disk 68, shown in Figure 8, [rotatable by means of a pin 69 in the stem 70, which stem 70 is normally held upward by a spring 71 [and which is operated downwardly by means of the pedal. 72, so that when the pedal is pushed down the disks 68 are turned. far enough to cause the screws 41 and 63 to push the" driving friction pulleys against the friction pulleys 38 and 61 and initiate not only the slow turning or rotating of the chucks, but also the revolving of tllBCllLlCkS themselves in their supports; in other words, holding the pattern and the lasts in the rotating chucks and revolving such rotating chucks on axis perpendicular to the vaxis of the chucks.

The chucks can be of different forms,'but I illustrate in Figures 10 13, inclusive, a chuck in detail having two slidable members 73 and 74 which are slotted so as tov fit one within theother, the slotted portions having bolts 75 passing through them, and the nuts 7 6 form means for securing them in adjusted position.-

The toe-engagingelements 77and78 are adjustable toward and from each other, the screws 7 9 and 80 being used to clamp them in adjustedposition. At the heel portion the step 81 supports the bottom of the last,

of its pivotal connection 84, and a screw 85 mounted in the bar 82 carries the foot 86,

which is pressed down tightly against the last to hold it in position. The shelf 87 is provided with a plate 88, shown in detail in Figure 13, which can be adjusted by reason of the slots 89 and which has its end 90 arranged to come opposite the end of the last when the last is in its proper position, and being adapted to be swung up out of the way, as shown in dotted outline in Figure 12. j

In the operation of the machine, when a particular size and style of pattern and a particular size and style of lastare to be used, the lasts 91 are placed as shown in Figure 6, that is,they are placed in the chucks and the chucks are adjusted so that they'tightly receive each. of the lasts, but at the same time the frames 13 are advanced so as to receive the knobs 92 at the toe ends of" the lasts on the centering screws 93 of the frame, and the ribs 94'left on lasts coming from the lathe are arranged in the center [last is taken I out and a pattern 'is inserted, this pattern having its ends finished andbeing without these front and rear rough projections, such pattern being 'show'n-in the center chuck inv-Figure. 5, The center last is the one against which the :and the bar 82 can swing to the open posipattern wheels 19 bear, the gates 18 being yieldingly held against the work by suitable means such as the weights 96 suspended by cords 96 passing over pulleys 96*. This adjustment, of course, is only necessary when a new style or size of last is to be finished.

Figures 2 and 3 show the position of the parts after this adjustment has been completed, and the frames 13 are slightly re treated. The pedal 72 is then pushed down, which forces the driving friction pulleys 62 and 39 so that they engage the friction pulleys 38 and 61, and the chucks then begin to slowly rotate in the direct-ion of the arrows shown in Figures 3 and a, presenting the ends of the article, such as the last 91, to the action of the cutters, the swinging of the work forcing the cutters outward, as will be seen from Figure 4. While this is going on, each last and the pattern are being revolved within the chuck by reason of the mechanism heretofore described, embracing the gears 59 and and their connection with the gears 49, 50 and 53 of the chucks, so that the lasts are twisted while they are revolving withv the chuck, thereby thoroughly finishing both ends and over their complete surface.

When the operation. is complete, the latches 33 hold the gates apart, the chuck support 34 is partly turned back to or slightly beyond its original position, the finished lasts in the top and bottom chucks are removed by unscrewing the screw 85, and since the bed has been made on the original last, all that has to be done is to push in the last until the plate 88 indicates how far it should be pushed in, the toe end being held by its clamping elements, again screw the screw 85 down and another pair of lasts can be finished by again starting the machine. During this removal and insertion of successive lasts it is not necessary to readjust the frames 13.

In case, however, that a; different form. or a diiferent size of last is to be finished, a readjustment of the chucks, of course, is necessary, and in this case, to avoid injury, it is desirable that the frames be retreated or pushed back as shown in Figure 1,

It will be evident that minor; changes can be made in the arrangement of the parts without departing from the scope of the invention.

I claim:

1. A machine fOr finishing the ends of turned articles comprising a rotatable chuck support a set of chucks rotatable in the chuck support on an axis perpendicular to the axis of the rotation of the support and adapted to hold the articles and a pattern with their ends exposed, yieldingly swinging gates having cutters and a tracer to engage the ends of the articles, means for rotating the chuck support and means for ro tating the chucks in the support.

2. A machine for finishing the ends of turned articles comprising a rotatable chuck support, a set of chucks rotatable in the chuck support on an axis perpendicular to the axis of the rotation of the support and adapted to hold the articles and a pattern with their ends exposed, yieldingly swinging gates having cutters and a tracer to engage the ends of the articles, means for rotating the chuck support and means for rotating the chucks in the support said last mentioned means being disposed to rotate one of the articles in a direction the reverse of that of the pattern and the other a rticle.

3. A, machine for finishing the ends of turned articles comprising a rotatable chuck, means for rotating the support, a set of chucks rotatable in the support on axes perpendicular to the axis of rotation of the support, means for rotating the chucks, a pair of opposed frames slidable toward and trom the. support, and having means for engaging the ends of the articles in chucks so as to align them, gates arranged to swing on the frames and projecting beyond said aligning means, and cutters and a pattern secured on the gates, and means for operating the cutters.

i. A machine for finishing the ends of turned articles comprising a rotatable chuck, means for rotating the support, a set of chucks rotatable in the support on axes perpendicular to the axis of rotation of the support, means for rotating the chucks, a pair of opposed frames slidable toward. and

from the support, and having means for.

engaging the ends of the articles in chucks so to align, them, gates arranged to swing on the frames and projecting beyond said aligning means, and cutters and a pattern secured on the gates, means for operating the cutters and means for securing the frames in adjusted positions,

In testimony that I claim the foregoin I have hereto set my hand, this 10th day of June, 1922' GEORGE W. DUCHEMIN. 

